Safety cutting mechanism for tape dispenser

Abstract

A safety cutting mechanism for tape dispenser includes a fixing seat located above a hold-down roller of the tape dispenser, a cutter mounted in the fixing seat, and a safety cover located above the cutter. Two curved spring arms are rearward and outward extended from a rear edge center of the safety cover to provide a predetermined elasticity, and a rib is provided across a lower front edge of the safety cover to normally locate in front of and thereby shield a toothed blade of the cutter when the tape dispenser is not in use. When the tape dispenser is forward tilted to tense and press a length of dispensed adhesive tape against a desired location, the rib of the safety cover is pushed upward and rearward by the tensed adhesive tape to slide away from the cutter and expose the toothed blade for cutting the adhesive tape.

1. A safety cutting mechanism for tape dispenser, comprising a fixing seat located above a hold-down roller of the tape dispenser and defining a forward recess for receiving a cutter and a safety cover therein; said cutter having a toothed blade for cutting an adhesive tape; said safety cover being located above said cutter and having two curved spring arms angularly rearward and outward extended from near a rear edge center of said safety cover for locking engagement in the forward recess of said fixing seat when the distal ends of said spring arms of said safety cover are abutted against a rear inner edge of said recess for retaining said safety cover in said forward recess to provide said safety cover with a predetermined elasticity; said safety cutting mechanism being characterized in that said safety cover is provided across a lower front edge with a downward extended rib having a predetermined height and extending downward from said safety cover in a substantially orthogonal direction, such that when said tape dispenser is not in use or in the process of dispensing a length of the adhesive tape, said rib is normally located in front of said cutter to shield the toothed blade of said cutter; and when said tape dispenser is forward tilted to tense and press the dispensed adhesive tape against a desired location, said rib of said safety cover is pushed upward and rearward by a tension of said tensed adhesive tape to slide away from said cutter to expose said toothed blade for cutting the adhesive tape.